First, I started by imported the 3d model into 3ds max
Then I start applying the materials using Material Editor and UVW map tool to adjust the mapping
Then I import the downloaded furnitures and put it to scale and arrange it in my space
Then I start playing with the Lighting system, like Daylight system below
It doesn't give the lighting that I want so I switch it to Target Light by putting it at the ceiling light
After that I adjust the intensity and exposure control to give a nice ambience
I also adjust the furnitures to suit the space more and the this is the final render
Then I also use photoshop to adjust more the interior lighting to give it a more realistic look
Then I put a human figure to give a sense of scale
Above picture is the First Final Interior Rendering.
Basically for the second rendering is the same process but with different lighting systems, here I use Omni, Target Light and Glow.
The Second Final Interior Rendering